# -*- coding: utf-8 -*-
# @Time    : 2024/9/4 23:48
# @Author  : 荒
# @FileName: account.py
# @Software: PyCharm

import random
from django import forms
from web import models
from django.core.validators import RegexValidator
from django.core.exceptions import ValidationError
from django.conf import settings

from django_redis import get_redis_connection

from utils.tencent.sms import send_sms_single
from utils import encrypt

class BootStrapForm(object):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        for name, field in self.fields.items():
            field.widget.attrs['class'] = 'form-control'
            field.widget.attrs['placeholder'] = '请输入%s' % (field.label,)


class RegisterModelForm(BootStrapForm,forms.ModelForm):
    password = forms.CharField(
        label='密码',
        min_length=8,
        max_length=64,
        error_messages={
          'min_length': "密码长度不能小于8个字符",
          'max_length': "密码长度不能大于64个字符"
        },
        widget=forms.PasswordInput())

    confirm_password = forms.CharField(
        label='重复密码',
        min_length=8,
        max_length=64,
        error_messages={
            'min_length': "重复密码长度不能小于8个字符",
            'max_length': "重复密码长度不能大于64个字符"
        },
        widget=forms.PasswordInput())
    code = forms.CharField(
        label='验证码',
        widget=forms.TextInput())

    mobile_phone = forms.CharField(label='手机号', validators=[RegexValidator(r'^(1[3|4|5|6|7|8|9])\d{9}$', '手机号格式错误'), ])

    class Meta:
        model = models.UserInfo
        # fields = "__all__"
        fields = ['username','email','password','confirm_password','mobile_phone','code']


    def clean_username(self):
        username = self.cleaned_data['username']

        exists = models.UserInfo.objects.filter(username=username).exists()
        if exists:
            raise ValidationError('用户名已存在')

        return username

    def clean_email(self):
        email = self.cleaned_data['email']

        exists = models.UserInfo.objects.filter(email=email).exists()
        if exists:
            raise ValidationError('邮箱已存在')
        return email

    def clean_mobile_phone(self):
        mobile_phone = self.cleaned_data['mobile_phone']

        exists = models.UserInfo.objects.filter(mobile_phone=mobile_phone).exists()
        if exists:
            raise ValidationError('手机号已注册')
        return mobile_phone

    def clean_password(self):
        pwd = self.cleaned_data['password']
        # 加密 & 返回
        return encrypt.md5(pwd)

    def clean_confirm_password(self):
        pwd = self.cleaned_data.get('password')
        confirm_pwd = encrypt.md5(self.cleaned_data['confirm_password'])
        if pwd != confirm_pwd:
            raise ValidationError('两次密码不一致')
        return confirm_pwd

    def clean_code(self):
        code = self.cleaned_data['code']
        mobile_phone = self.cleaned_data.get('mobile_phone')

        if not mobile_phone:
            return code

        conn = get_redis_connection()
        redis_code = conn.get(mobile_phone)
        if not redis_code:
            raise ValidationError('验证码失效或未发送，请重新发送')

        redis_str_code = redis_code.decode('utf-8')
        if code.strip() != redis_str_code.strip():
            raise ValidationError('验证码错误，请重新输入')

        return code


class SendSmsForm(forms.Form):
    mobile_phone = forms.CharField(label='手机号',validators=[RegexValidator(r'^(1[3|4|5|6|7|8|9])\d{9}$','手机号格式错误'),])

    def __init__(self,request,*args,**kwargs):
        super().__init__(*args,**kwargs)
        self.request = request

    def clean_mobile_phone(self):
        """ 手机号校验的钩子 """
        mobile_phone = self.cleaned_data['mobile_phone']

        # 判断短信模版是否有问题
        tpl = self.request.GET.get('tpl')
        template_id = settings.TENCENT_SMS_TEMPLATE.get(tpl)
        if not template_id:
            raise ValidationError('短信模版错误')

        # 校验数据库中是否已有手机号
        exists = models.UserInfo.objects.filter(mobile_phone=mobile_phone).exists()
        if tpl == 'login':
            if not exists:
                raise ValidationError('手机号不存在')
        else:
            if exists:
                raise ValidationError('手机号已存在')

        # 创造验证码
        code = random.randrange(1000,9999)

        # 发送短信
        sms = send_sms_single(mobile_phone,template_id,[code,])
        if sms['result'] != 0:
            raise ValidationError("短信发送失败, {}".format(sms['errmsg']))

        # 验证码 写入redis(django-redis)
        conn = get_redis_connection()  # 默认找配置中的default
        conn.set(mobile_phone,code,ex=60)

        return mobile_phone


class LoginSMSForm(BootStrapForm,forms.Form):
    mobile_phone = forms.CharField(label='手机号', validators=[RegexValidator(r'^(1[3|4|5|6|7|8|9])\d{9}$', '手机号格式错误'), ])

    code = forms.CharField(
        label='验证码',
        widget=forms.TextInput())

    def clean_mobile_phone(self):
        mobile_phone = self.cleaned_data['mobile_phone']
        exists = models.UserInfo.objects.filter(mobile_phone=mobile_phone).exists()
        # user_object = models.UserInfo.objects.filter(mobile_phone=mobile_phone).first()
        if not exists:
            raise ValidationError('手机号不存在')

        return mobile_phone

    def clean_code(self):
        code = self.cleaned_data['code']
        mobile_phone = self.cleaned_data['mobile_phone']

        # 手机号不存在，则验证码无需在校验
        if not mobile_phone:
            return code

        conn = get_redis_connection()
        redis_code = conn.get(mobile_phone)
        if not redis_code:
            raise ValidationError('验证码失效或未发送，请重新发送')

        redis_str_code = redis_code.decode('utf-8')
        if code.strip() != redis_str_code:
            raise ValidationError('验证码错误，请重新输入')

        return code

class LoginForm(BootStrapForm,forms.Form):
    username = forms.CharField(label='用户名')
    password = forms.CharField(label='密码',widget=forms.PasswordInput(render_value=True))
    code = forms.CharField(label='图片验证码')

    def __init__(self,request,*args,**kwargs):
        super().__init__(*args,**kwargs)
        self.request = request

    def clean_password(self):
        pwd = self.cleaned_data['password']
        # 加密 & 返回
        return encrypt.md5(pwd)

    def clean_code(self):
        """ 钩子 图片验证码是否正确 """
        # 读取用户输入的验证码
        code = self.cleaned_data['code']

        # 去session中获取自己的验证码
        session_code = self.request.session.get('image_code')
        if not session_code:
            raise ValidationError('验证码已过期，请重新获取')

        if code.strip().upper() != session_code.strip().upper():
            raise ValidationError('验证码输入错误')

        return code






